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4A. PREVENTION PROCEDURES This section describes the procedures that are in place at this facility to minimize the possibility of fire, explosion, or unplanned releases of hazardous substances to the environment which could threaten human health or the environment. These procedures are contained in various PG&E Operating Department bulletins, standard practices, and policies. 1. Storage in Containers • All containers are identified with their contents. • Containers are maintained in good condition. Severely rusted containers or those with apparent structural defects are not used. • The contents of leaking containers are immediately transferred into replacement containers. • The bungs and lids of all containers are kept closed (hand -tight) except when materials are being removed from or added to them. • Containers (less than 30 gallons) are stacked no more than three feet or two containers high, unless they are on fixed shelving or otherwise secured. • Stacked containers (30 gallons or larger) are separated by and strapped to pallets to prevent stress, and are not stacked more than two high. • Containers do not block exits, stairways, or passageways. • Flammable and combustible materials are stored in approved metal cabinets or fire -rated storage rooms labeled "HAZARDOUS --KEEP FIRE AWAY. No more than 60 gallons are stored in any cabinet, and no more than three cabinets are located in the same room. • Incompatible materials (e.g., corrosives, flammable liquids, reactive materials) are separated by aisles or fire walls. All aisles should be feet wide to allow for access, and no container should be more than feet from any aisle. • PCBs and PCB -contaminated materials and wastes are stored in designated PCB Storage Areas. • Hazardous wastes are stored in designated Hazardous Waste Storage Areas. • Pesticides and herbicides are stored in approved, locked cabinets or storage rooms located at ground level. 4-1